AirHint found the following cheapest return flights from Belfast (BHD) to Keflavik (KEF) in July 2025 (see full year).

Return flights

16 Jul - 23 Jul	Aer Lingus
15 Jul - 22 Jul	easyJet
05 Jul - 18 Jul	Aer Lingus
18 Jul - 21 Jul	Aer Lingus
02 Jul - 05 Jul	Aer Lingus
27 Jul - 30 Jul	Aer Lingus
29 Jul - 08 Aug	easyJet
30 Jul - 08 Aug	Aer Lingus
28 Jul - 08 Aug	easyJet
17 Jul - 22 Jul	Aer Lingus
25 Jul - 01 Aug	Aer Lingus
07 Jul - 14 Jul	easyJet
31 Jul - 08 Aug	easyJet

Also check the deals for one-way flights from Belfast to Keflavik in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Belfast to Keflavik in July from $417

Return flights